xHCI: prolong host controller halt time limit
xHCI 1.0 spec specifies the xHC shall halt within 16ms after software clears
Run/Stop bit. In xHCI 0.96 spec the time limit is 16 microframes (2ms), it's
too short and often cause dmesg shows "Host controller not halted, aborting
reset." message when rmmod xhci-hcd.
Modify the time limit to comply with xHCI 1.0 specification and prevents the
warning message showing when remove xhci-hcd.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 023175e..8dfa67f 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -93,7 +93,7 @@
*
* Disable any IRQs and clear the run/stop bit.
* HC will complete any current and actively pipelined transactions, and
- * should halt within 16 microframes of the run/stop bit being cleared.
+ * should halt within 16 ms of the run/stop bit being cleared.
* Read HC Halted bit in the status register to see when the HC is finished.
* XXX: shouldn't we set HC_STATE_HALT here somewhere?
*/